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风力机翼型动态失速等离子体流动控制数值研究

张卫国 史喆羽 李国强 杨永东 黄明其 白云卯

张卫国, 史喆羽, 李国强, 杨永东, 黄明其, 白云卯. 风力机翼型动态失速等离子体流动控制数值研究[J]. 力学学报, 2020, 52(6): 1678-1689. doi: 10.6052/0459-1879-20-090
引用本文: 张卫国, 史喆羽, 李国强, 杨永东, 黄明其, 白云卯. 风力机翼型动态失速等离子体流动控制数值研究[J]. 力学学报, 2020, 52(6): 1678-1689. doi: 10.6052/0459-1879-20-090
Zhang Weiguo, Shi Zheyu, Li Guoqiang, Yang Yongdong, Huang Minqi, Bai Yunmao. NUMERICAL STUDY ON DYNAMIC STALL FLOW CONTROL FOR WIND TURBINE AIRFOIL USING PLASMA ACTUATOR[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(6): 1678-1689. doi: 10.6052/0459-1879-20-090
Citation: Zhang Weiguo, Shi Zheyu, Li Guoqiang, Yang Yongdong, Huang Minqi, Bai Yunmao. NUMERICAL STUDY ON DYNAMIC STALL FLOW CONTROL FOR WIND TURBINE AIRFOIL USING PLASMA ACTUATOR[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(6): 1678-1689. doi: 10.6052/0459-1879-20-090

风力机翼型动态失速等离子体流动控制数值研究

doi: 10.6052/0459-1879-20-090
基金项目: 1) 风雷青年创新基金(PJD20190003);基础和前沿技术研究基金(PJD20190002)
详细信息
    作者简介:

    2) 李国强, 助理研究员, 主要研究方向: 旋翼空气动力学, 流动控制与测量. E-mail: CARDCL@126.com

    通讯作者:

    李国强

  • 中图分类号: O355

NUMERICAL STUDY ON DYNAMIC STALL FLOW CONTROL FOR WIND TURBINE AIRFOIL USING PLASMA ACTUATOR

  • 摘要: 针对动态失速引起的风力机翼型气动性能恶化的问题,本文基于动网格和滑移网格技术, 开展了大涡模拟数值计算研究,探索了非定常脉冲等离子体的动态流动控制机理. 结果表明,等离子体气动激励能够有效控制翼型动态失速, 改善平均和瞬态气动力,减小力矩负峰值和迟滞环面积. 压力分布在等离子体施加范围内出现了负压"凸起",上翼面吸力峰值明显增大.脉冲频率和占空比这两个非定常控制参数对流动控制影响显著,无因次脉冲频率为1.5时等离子体控制效果较好,占空比为0.8时即可接近连续工作模式下的气动收益. 翼型深失速状态,等离子体促使流动分离位置明显向后缘移动, 抵抗了大尺度动态失速涡的发生,分离涡结构破碎耗散、重新附着, 涡流影响范围减小; 浅失速状态,等离子体激励具有较强的剪切层操纵能力, 诱导了翼型边界层提前转捩,促进了与主流的动量掺混. 等离子体气动激励诱导出前缘附近贴体翼面"涡簇",起到了虚拟气动外形的作用.不同尺度、频域的动态涡结构与等离子体气动激励的非线性、强耦合作用导致了气动力/力矩的谐波振荡.

     

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  • 收稿日期:  2020-03-20
  • 刊出日期:  2020-12-10

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